1242312224 has 24 divisors (see below), whose sum is σ = 2449805148. Its totient is φ = 620139520.

The previous prime is 1242312217. The next prime is 1242312229. The reversal of 1242312224 is 4222132421.

It can be written as a sum of positive squares in 2 ways, for example, as 1160083600 + 82228624 = 34060^2 + 9068^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1242312224.

It is not an unprimeable number, because it can be changed into a prime (1242312229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11717 + ... + 51204.

Almost surely, 2^1242312224 is an apocalyptic number.

It is an amenable number.

1242312224 is a deficient number, since it is larger than the sum of its proper divisors (1207492924).

1242312224 is an equidigital number, since it uses as much as digits as its factorization.

1242312224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63548 (or 63540 counting only the distinct ones).

The product of its digits is 1536, while the sum is 23.

The square root of 1242312224 is about 35246.4498070373. The cubic root of 1242312224 is about 1075.0044273119.

Adding to 1242312224 its reverse (4222132421), we get a palindrome (5464444645).

The spelling of 1242312224 in words is "one billion, two hundred forty-two million, three hundred twelve thousand, two hundred twenty-four".